2009 Audi A4 vs. 2005 Opel Astra
To start off, 2009 Audi A4 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Opel Astra. In addition, the cost of maintenance, including insurance, on 2005 Opel Astra would be higher. At 2,995 cc (6 cylinders), 2009 Audi A4 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (328 HP @ 5500 RPM) has 224 more horse power than 2005 Opel Astra. (104 HP @ 6000 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 2005 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 415 kg more than 2005 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Opel Astra. In wet, icy, snow, or gravel driving conditions, 2009 Audi A4 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2009 Audi A4 (440 Nm @ 2900 RPM) has 290 more torque (in Nm) than 2005 Opel Astra. (150 Nm @ 3900 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Astra.
Compare all specifications:
| 2009 Audi A4 | 2005 Opel Astra | |
| Make | Audi | Opel |
| Model | A4 | Astra |
| Year Released | 2009 | 2005 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2995 cc | 1598 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 104 HP |
| Engine RPM | 5500 RPM | 6000 RPM |
| Torque | 440 Nm | 150 Nm |
| Torque RPM | 2900 RPM | 3900 RPM |
| Engine Bore Size | 84.6 mm | 79 mm |
| Engine Stroke Size | 89 mm | 81.5 mm |
| Engine Compression Ratio | 10.3:1 | 10.5:1 |
| Acceleration 0-100mph | 5.1 seconds | 12.2 seconds |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Weight | 1650 kg | 1235 kg |
| Vehicle Length | 4720 mm | 4300 mm |
| Vehicle Width | 1830 mm | 1760 mm |
| Vehicle Height | 1410 mm | 1440 mm |
| Wheelbase Size | 2820 mm | 2700 mm |
| Fuel Consumption Overall | 9.7 L/100km | 6.8 L/100km |
